[do not merge] strict vs lazy voter list mode for payout benchs

[gpestana]

This PR (pls do not merge) adds the benchmarks for the strict voter mode sorting in the voter list and it adds a test that calculates the highest T:: MaxExposurePageSize so that it fits within BlockWeights::get().get(DispatchClass::Normal).max_extrinsic.

Note that:

• "strict voter mode" means that all the voter nodes in the VoterList are kept up to date and sorted at all stake updates.
• "lazy voter mode" means the VoterList scores are not updated at nominator stake update (similar to currently in Polkadot/Kusama)
• the weights for the test without stake-tracker were taken from master.
• The bench payout_stakers_alive_staked is used to estimate the upper bond weight of both Call::payout_stakers and Call::payout_stakers_by_page.

The results of the test are:

 == Strict VoterList sorting mode
 - Max. page_size: 1984
 - Weight { ref_time: 1470154955707, proof_size: 7505385 }

 == Lazy VoterList sorting mode
 - Max page_size: 2496
 - Weight { ref_time: 1469080809430, proof_size: 9437673 }

 == No stake-tracker
 - Max page_size: 3008
 - Weight { ref_time: 1474536186486, proof_size: 11362971 }

[gpestana]

bot bench polkadot-pallet --runtime=westend --pallet=pallet_staking --extrinsic=payout_stakers_alive_staked

[command-bot]

@gpestana unknown option '--extrinsic=payout_stakers_alive_staked'

[gpestana]

bot bench polkadot-pallet --runtime=westend --pallet=pallet_staking

[command-bot]

@gpestana https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/6387769 was started for your command "$PIPELINE_SCRIPTS_DIR/commands/bench/bench.sh" --subcommand=pallet --runtime=westend --target_dir=polkadot --pallet=pallet_staking. Check out https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/pipelines?page=1&scope=all&username=group_605_bot to know what else is being executed currently.

Comment bot cancel 7-87755997-9931-4825-89b6-12ab18a6e21c to cancel this command or bot cancel to cancel all commands in this pull request.

[command-bot]

@gpestana Command "$PIPELINE_SCRIPTS_DIR/commands/bench/bench.sh" --subcommand=pallet --runtime=westend --target_dir=polkadot --pallet=pallet_staking has finished. Result: https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/6387769 has finished. If any artifacts were generated, you can download them from https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/6387769/artifacts/download.

[gpestana]

bot bench polkadot-pallet --pallet=pallet_staking

[command-bot]

@gpestana https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/6389606 was started for your command "$PIPELINE_SCRIPTS_DIR/commands/bench/bench.sh" --subcommand=pallet --runtime=rococo --target_dir=polkadot --pallet=pallet_staking. Check out https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/pipelines?page=1&scope=all&username=group_605_bot to know what else is being executed currently.

Comment bot cancel 9-0ded11ca-082e-4635-a3ac-d06847d32533 to cancel this command or bot cancel to cancel all commands in this pull request.

[command-bot]

@gpestana Command "$PIPELINE_SCRIPTS_DIR/commands/bench/bench.sh" --subcommand=pallet --runtime=rococo --target_dir=polkadot --pallet=pallet_staking has finished. Result: https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/6389606 has finished. If any artifacts were generated, you can download them from https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/6389606/artifacts/download.

[gpestana]

bot bench polkadot-pallet --runtime=westend --pallet=pallet_staking

[command-bot]

@gpestana https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/6393274 was started for your command "$PIPELINE_SCRIPTS_DIR/commands/bench/bench.sh" --subcommand=pallet --runtime=westend --target_dir=polkadot --pallet=pallet_staking. Check out https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/pipelines?page=1&scope=all&username=group_605_bot to know what else is being executed currently.

Comment bot cancel 10-7ec9e07a-4aa5-4d3c-bec6-bd1719b22519 to cancel this command or bot cancel to cancel all commands in this pull request.

[command-bot]

@gpestana Command "$PIPELINE_SCRIPTS_DIR/commands/bench/bench.sh" --subcommand=pallet --runtime=westend --target_dir=polkadot --pallet=pallet_staking has finished. Result: https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/6393274 has finished. If any artifacts were generated, you can download them from https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/6393274/artifacts/download.

[paritytech-cicd-pr]

The CI pipeline was cancelled due to failure one of the required jobs.
Job name: test-linux-stable 2/3
Logs: https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/6397397